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annotate lib/sha1.h @ 8045:7dcf8a1f2f5e

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* lib/regex.h (_Restrict_): Renamed from __restrict, to avoid a circularity problem with HP-UX ia64 reported by Bob Proulx in <http://lists.gnu.org/archive/html/bug-gnulib/2007-01/msg00394.html>. All uses changed. (_Restrict_arr_): Renamed from __restrict_arr, for similar reasons. All uses changed. * lib/regcomp.c, lib/regexec.c: Change all uses from __restrict to _Restrict_. * lib/regexec.c (regexec): Declare pmatch with _Restrict_arr_, so that the parameter matches the prototype.
author Paul Eggert <eggert@cs.ucla.edu>
date Mon, 29 Jan 2007 00:37:14 +0000
parents 8041d378a5a1
children 9a9b67d137e3
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1 /* Declarations of functions and data types used for SHA1 sum
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2 library functions.
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3 Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify it
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6 under the terms of the GNU General Public License as published by the
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7 Free Software Foundation; either version 2, or (at your option) any
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8 later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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a48fb0e98c8c *** empty log message ***
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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18
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19 #ifndef SHA1_H
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20 # define SHA1_H 1
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21
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22 # include <stdio.h>
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23 # include <stdint.h>
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24
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25 /* Structure to save state of computation between the single steps. */
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26 struct sha1_ctx
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27 {
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28 uint32_t A;
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29 uint32_t B;
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30 uint32_t C;
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31 uint32_t D;
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32 uint32_t E;
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33
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34 uint32_t total[2];
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35 uint32_t buflen;
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36 uint32_t buffer[32];
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37 };
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38
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39
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40 /* Initialize structure containing state of computation. */
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41 extern void sha1_init_ctx (struct sha1_ctx *ctx);
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42
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43 /* Starting with the result of former calls of this function (or the
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44 initialization function update the context for the next LEN bytes
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45 starting at BUFFER.
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46 It is necessary that LEN is a multiple of 64!!! */
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47 extern void sha1_process_block (const void *buffer, size_t len,
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48 struct sha1_ctx *ctx);
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49
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50 /* Starting with the result of former calls of this function (or the
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51 initialization function update the context for the next LEN bytes
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52 starting at BUFFER.
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53 It is NOT required that LEN is a multiple of 64. */
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54 extern void sha1_process_bytes (const void *buffer, size_t len,
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55 struct sha1_ctx *ctx);
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56
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57 /* Process the remaining bytes in the buffer and put result from CTX
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58 in first 20 bytes following RESBUF. The result is always in little
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59 endian byte order, so that a byte-wise output yields to the wanted
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60 ASCII representation of the message digest.
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61
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62 IMPORTANT: On some systems it is required that RESBUF be correctly
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63 aligned for a 32 bits value. */
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64 extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
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65
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66
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67 /* Put result from CTX in first 20 bytes following RESBUF. The result is
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68 always in little endian byte order, so that a byte-wise output yields
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69 to the wanted ASCII representation of the message digest.
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70
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71 IMPORTANT: On some systems it is required that RESBUF is correctly
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72 aligned for a 32 bits value. */
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73 extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
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74
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75
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76 /* Compute SHA1 message digest for bytes read from STREAM. The
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77 resulting message digest number will be written into the 20 bytes
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78 beginning at RESBLOCK. */
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79 extern int sha1_stream (FILE *stream, void *resblock);
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80
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81 /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The
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82 result is always in little endian byte order, so that a byte-wise
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83 output yields to the wanted ASCII representation of the message
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84 digest. */
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85 extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
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86
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87 #endif